Direction : Read the following questions carefully and choose the right answer.
1
What will come in the place of question mark (?) in the following question:

57% of 350 + ?% of 170 = – 89.5 – 512 – 9
» Explain it
C
57% of 350 + ?% of 170 = – 89.5 – 512 – 9
 
350 ×  57  + ? ×  170  = – 89.5 – 8 – 9
100 100
 
199.5 + 1.7 × ? = – 106.5
 
1.7 × ? = – 106.5 – 199.5
 
1.7 × ? = – 306
 
? = – 180

Hence, option C is correct.
2
What will come in the place of question mark (?) in the following question:

6 4  +  2  – 4 2  = ? –   1
11 33 3 33
» Explain it
C
6 4  +  2  – 4 2  = ? –  1
11 33 3 33

6 4  +  2  – 4 2  +  1  = ?
11 33 3 33

? = (6 – 4) +  ( 4  +  2  –  2  +  1 )
11 33 3 33

? = 2 +  12 + 2 – 22 + 1
33

? = 2 +  – 7
33

? = 2 –  7
33

? = 1 +  ( 1 –  7 )
33

? = 1 +  26  = 1 26
33 33

Hence, option C is correct.
 
3
What will come in the place of question mark (?) in the following question:

87 × 6.3 ÷ 841 + 11.5 – 16.3 + 13.8 = ?
» Explain it
B
87 × 6.3 ÷ 841 + 11.5 – 16.3 + 13.8 = ?
 
? = 87 × 6.3 ÷ 29 + 25.3 – 16.3
 
? = 3 × 6.3 + 9
 
? = 18.9 + 9 = 27.9

Hence, option B is correct.
4
What will come in the place of question mark (?) in the following question:

529 ÷ ?% of 270 = 115 × 81 ÷ ?2
» Explain it
B
529 ÷ ?% of 270 = 115 × 81 ÷ ?2
 
23 ÷ (2.7 × ?) = 115 × 9 ÷ ?2
 
23 ÷ 2.7 = 115 × 9 ÷ ?
 
? = 115 × 9 ÷ 23 × 2.7
 
? = 121.5

Hence, option B is correct.
5
What will come in the place of question mark (?) in the following question:

?2% of 1219 ÷ 53 = (246.74 – 181.36 + 103.62) ÷ 23
» Explain it
A
?2% of 1219 ÷ 53 = (246.74 – 181.36 + 103.62) ÷ 23

?2 ×  1219  ÷ 53 = (350.36 – 181.36) ÷ 23
100

?2 ×  23  = 169 ÷ 23
100

?2 = 169 × 100 ÷ (23 × 23)

? = 13 × 10 ÷ 23
? =  130
23

Hence, option A is correct.